Abstract:
In the context of building a new power system with new energy as the main body, the distribution network presents a complex, diverse and flexible development trend. Multiple distributed energy storage such as electricity storage, hydrogen storage, gas storage, thermal storage and cold storage can improve the flexibility and economy of system operation while solving the randomness and volatility of new energy units on the distribution side. In this paper, the research on the safety and stability control of distributed energy storage is firstly refined. On this basis, the flexible and economic application of multiple distributed energy storage under short/medium and long-term and natural disasters is systematically summarized. Specifically, it is analyzed from the perspectives of participating in short-term power regulation, realizing medium-long term energy balance and flexible emergency response under sudden disasters. Secondly, market operation is the key to expanding the application of distributed energy storage. However, there are still gaps in the distributed energy storage market in China. Therefore, this paper explores the market prospects of distributed energy storage. Finally, this paper points out the research direction of multi-distributed energy storage and puts forward some suggestions from the perspective of regulation and market based on the existing research situation.